More now on the fun from last night. The hollywood-washington mashup that brings out the chief comedian. With all kinds of stars along for the ride. Sara Haines was there on the red carpet for her first nerd prom. Reporter: It's Washington's party of the year. When Hollywood comes calling. I feel very honored to be in the presence of the president of the United States, you know. Reporter: And nothing's offlimits. We rolled out healthcare.gov. That could have gone better. Reporter: Especially for president Obama. On the plus side, they did turn the launch of healthcare.gov into one of the year's biggest movies. Reporter: Ripping on the house speaker. These days, the house republicans give John Boehner a harder time than they give me. Which means Orange really is the new black. Reporter: Even Hillary Clinton. You may have heard she had to dodge a flying shoe at a press conference. Reporter: But Joel Mchale delivered the most cutting jokes of the night. It's a thrill to be here in Washington, D.C., the city that started the whole crack-smoking mayor craze. Reporter: New Jersey governor Chris Christie seemed to be the favorite target. Buckle up, governor Chris Christie. Excuse me, extender buckle up. All right. Reporter: The governor was also the night's best sport. Mugging with Mchale after the show. The audience Saturday night, a mix of reporters, Washington a-listers and Hollywood stars. They call it the nerd prom. We were all-access on the red carpet. Can we do an awkward prom pose? Of course. Got it. . Reporter: We totally got it. The star of "Orange is the new black" summing up Washington's biggest night of glitz and glamour. Are you nervous? I am not nervous as much as I am like giddy. I feel truly giddy about it. It feels like Christmas. Sara probably stayed up most of the night. She's here with mark leibovich. Did you have fun? I had so much fun. It's a crazy dream, politicians crossed with celebrities and journalists. Like everyone in your world coming together. And mark, you have parodied it. I don't know. We have certainly criticized it. I think it's an abomination. I don't go. I just think it's -- Your paper doesn't go. But peter baker got an award. Peter did. We love peter. We congratulate him. We don't go. Beyond that, I think it's morphed into this extravaganza of two dozen preparties and afterparties. What we celebrating? Kathleen parker wrote it's the cocktail of self-love and self-loathing. Exactly. I have been going now for 30 years. And, I sense another turn in the dinner. It kind of had this, a big rise where all of Washington and Hollywood are coming together. The last couple of years, it does seem there's a little more pushback to going to -- to recalibrate toward the old days. I would hope so. My book is about disconnect. Disconnect between how the country views Washington and how Washington views itself. And this is a classic case of the bubble world and the unself-awareness of spending millions of dollars over a number of days to celebrate ourselves. And again, you ask, why? Sara, you brought up the roast humor sometimes gets -- I'm not a big roast person. I'm a good natured sense of humor. I found myself squirming most of the time. I did get a few laughs. I love Joel Mchale. Thank you both very much.

This transcript has been automatically generated and may not be 100% accurate.

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Celebrities, reporters and politicians mingle at one of Washington's biggest parties of the year.

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